Large, heavy-bodied seabird with a daggerlike bill. Adults are dark brown above with a white belly and yellow feet. Note pale yellow bill.
Large seabird with a bullet-shaped body. Adults have an all dark back and tail.
Birds along the Pacific Coast of Mexico have a paler head, but still have a dark brown back and tail.
Large seabird with a bullet-shaped body and daggerlike bill. Brown above with a brown neck and a white belly.
Immature birds look like adults but have a dingy brown belly.
Heavy-bodied dark brown seabird with a white belly. Note pale yellow bill and feet.
Immature birds look similar to adults but have a dingy brown belly.
Plunge-dives into the ocean, sweeping its wings backward and slicing through the water like an arrow.
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A large seabird with a fairly long neck, heavy pointed bill, long wings, and a rather long, pointed tail. It has stout, short legs with large webbed feet.
Larger than a Caspian Tern, smaller than a Northern Gannet.
goose-sized or largerOrnithologists recognize four subspecies, of which two occur in North America: brewsteri, which nests in western Mexico, and leucogaster, which nests in the Caribbean and tropical Atlantic. These are similar except in the head and neck color of adult males, which is pale gray in brewsteri and dark brown in leucogaster. The other subspecies are plotus of the Pacific and Indian Oceans (the largest of all subspecies) and etesiaca of the Pacific in Central America and Colombia (the smallest).
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